13 replies to this topic

[felixthecat]

the utube videos are impressive and suggest that this blue(binary)is also cheaper as well as safe,,well its not cheaper here if you can get it....i only make small amounts of flash so the cost is irrelevent if im able to mix/load this without my bottom going 5p50p5p50p5p50p,,does anyone have any comments?

[Sparky]

Cooperman has had good results on here with it but I have struggled to get it to do anything in small "firecracker" quantities. I have not tried anything in a larger report e.g 10g + of flash. My understanding is that it needs a little more than just quick match or 2mm green visco to light it but I've not had the time recently to try a few tests.

[bangkokpyro]

I think the 'Blue Aluminium' is mostly just hype.

It's super expensive compared with Indian and German Dark Aluminium, can be difficult to ignite in some devices and the fact that the majority of hobby and professional firework makers don't use despite the fact that it's been on the market for a while now should tell you something.

Edited by bangkokpyro, 07 May 2013 - 02:14 PM.

[cooperman435]

Amen to all that above, it does work Ill guarantee that but in smaller amounts its not the same as "flash" made the usual way, its (in my humble opinion) only really of use for larger items of 50g or above, so Maroons and salutes.

 

If the price comes down or if it somehow helps with transportation regs then maybe it would have more of an attraction.

[felixthecat]

thanks for the information guys...i think i get the picture..unless your launching teapot sized salutes with a time fuse that could light thermite forget it

[cooperman435]

Ignition wasn't an issue for me simply a few feet of BM coming out of the time fuse tube and bundled up inside the salute, I believe they suggest a pressure generation method PRE flash ignition which it did perfectly well.

[Sparky]

Phil,

 

That's interesting so you are saying that the BM was enough to build pressure and then aid ignition inside the salute casing? Sounds like a lot less hassle than the spollet idea I was going to try.

[cooperman435]

Yeah it worked perfectly, it simply needs pressure and heat to get it started then it goes its self.

[starseeker]

Yeah it worked perfectly, it simply needs pressure and heat to get it started then it goes its self.

 

Would a flash bag do the same job ?

[cooperman435]

I suppose so yeah but a bit overkill

[cooperman435]

Just received some surprising news from a friend currently experimenting and testing with Blue Ali for work.

 

After trials with flame and abrasion on 70/30 flash an impact test resulted in ignition! (the exact words used were "it instantly wasn't there!")

 

This surprised me to learn (and him too at the time I imagine!) has anyone any knowledge of similar as the impression I have is that it was found to be surprisingly shock sensitive?

[Sparky]

I would be interested to know more about the impact test. If it is being struck by a metallic object with considerable force, I don't really see this as a useful test.

[cooperman435]

The test was steel on steel but from what I was told it was surprisingly soft blows needed to initiate it, he is now doing further testing and has asked that  report findings so I will as and when I get them.

 

Sparky, you don't understand the significance of impact sensitivity? its both a concern for accidental ignition but also with this specific Aluminum product surprising (to me anyway)

Edited by cooperman435, 16 May 2013 - 11:40 AM.

[Sparky]

Phil, Don't get me wrong. Impact sensitivity is important but steel on steel will generate a huge pressure gradient and is unlikely to be reproduced in any normal environment for hobbyists surely?

 

Sensitivity to static, spark and flame is far more important I would think.